I 73 MOLI.USCA OF THE GULK OF MEXICO 142 



month of a fish trawled by the Albatross between the Mis- 

 sissippi delta and Cedar Keys, at 324 fms. The Spirula had 

 just been seized alive by the fish and the soft parts, pre- 

 viously imperfectly known, were complete. See Science, 



1896. 



There are several forms of Spirula. S. spirula of 

 Linnaeus was a composite, according to Dr. Ball, and since 

 the species cannot be differentiated by the shells alone no 

 one can tell exactly which species Linnaeus had although he 

 gave America as the habitat. Huxley and Pelseneer (Chal- 

 lenger Rept.) fixed the name australis Lamarck on the An- 

 tillean species. 



Note. — Argonaula and Spirula are the only shell-bearing 

 Cephalopods reported from the Gulf of Mexico. Of other 

 forms, the Brazilian, Loligo brevis Blainville is cited from 

 Cameron and elsewhere on the Louisiana coast, and /.. 

 Jicmiptera Howell from Florida and the Gulf of Mexico. 



